Ultra-low-expansion glass-ceramic super-stable treatment method

A technology of stabilization treatment and glass-ceramics, applied in Sagnac effect gyroscopes, etc., can solve problems such as not being able to meet the ultra-stabilization treatment requirements of laser gyro resonator cavities, and achieve the goal of improving stabilization efficiency and reducing internal stress Effect

Active Publication Date: 2012-06-20
FLIGHT AUTOMATIC CONTROL RES INST
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Problems solved by technology

[0005] In order to solve the problem that the existing technology cannot meet the ultra-stabilization processing requirements of the laser gyro resonator, the present invention provides an ultra-l

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Embodiment Construction

[0020] The present invention will be described in further detail below by means of specific embodiments:

[0021] The invention relates to an ultra-stabilization treatment method for ultra-low expansion glass-ceramics, in particular to an ultra-stabilization treatment method for a laser gyro resonant cavity that requires high stability.

[0022] Concrete implementation steps of the present invention are as follows:

[0023] Step 1. Place the workpiece in a high temperature resistant non-metal box,

[0024] The size of the non-metallic box is large enough, so that the distance between each side of the workpiece and the inner layer of the non-metallic box is greater than 30mm, and the height of the workpiece and the bottom of the non-metallic box is 30mm and the diameter It is supported by a 10mm support block to ensure that during the temperature treatment process, most of the temperature conduction on the workpiece is realized through the gas in the box;

[0025] Step 2. Aft...

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Abstract

The invention relates to an ultra-low-expansion glass-ceramic super-stable treatment method. The invention adopts an air-sealing low conductive high temperature dependent non-metallic box (1). The method comprises the following steps that: an ultra-low-expansion glass-ceramic machining part (2) to be treated is placed in a heat treatment furnace (3), the heat treatment furnace is heated from the room temperature to a temperature ranging from 360 DEG C to 420 DEG C at a rate of 3-5 DEG C/min according to the demand, the temperature is kept for 8-12 hours, then the temperature is reduced at a rate of 0.05-0.2DEG C/min; and when the temperature of the treatment furnace is reduced to 120+/-20 DEG C, the treatment furnace control system is closed, and the treated machining part is placed in the furnace for 48 hours and then taken out. By adopting the ultra-low-expansion glass-ceramic super-stable treatment method, the internal stress existing in the machining part and the thermal deformation of the machining part can be effectively reduced so that the angle variation is less than 1 second of arc when the temperature changes from -50 DEG C to +100 DEG C; and the linear expansion coefficient of the glass-ceramic is ensured to be superior to 0.5*10<-7>/DEG C and the stabilization efficiency is increased.

Description

technical field [0001] The invention relates to an ultra-stabilization treatment method for ultra-low expansion glass-ceramics, in particular to an ultra-stabilization treatment method for a laser gyro resonant cavity that requires high stability. Background technique [0002] Laser gyroscopes are generally made of ultra-low expansion glass-ceramics (such as ZERODUE, etc.), and are manufactured into ring resonators. The temperature stability of the resonator directly affects the stability of the laser gyroscope performance. The resonant cavity is generally realized by optical mechanical processing methods such as drilling, milling, and grinding. The machining process inevitably produces residual stress, which destroys the stability of the material and causes the workpiece to deform over time. [0003] Although the traditional temperature stabilization treatment method eliminates the internal stress of the workpiece to a large extent and stabilizes the structure, it destroy...

Claims

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Application Information

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IPC IPC(8): C03B32/00G01C19/66
Inventor 韩宗虎雷建军陆志东屈玉善郭昕李大琪
Owner FLIGHT AUTOMATIC CONTROL RES INST
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